Added basic interaction functionality

scripts/dialogic_starter.gd

@@ -0,0 +1,5 @@
+extends Node
+class_name DialogicStarter
+
+func open(timeline: String):
+	Dialogic.start(timeline)

scripts/interaction_area.gd

@@ -0,0 +1,9 @@
+extends Node3D
+
+@onready var area_3d: Area3D = $Area3D
+
+signal interacted
+
+func _input(event: InputEvent) -> void:
+	if event.is_action("interact") && event.is_pressed() && area_3d.has_overlapping_bodies():
+		interacted.emit()